DE69711178D1 - NDIR DEVICE AND METHOD FOR MEASURING ISOTOPE RELATIONSHIPS IN GAS SAMPLES - Google Patents

NDIR DEVICE AND METHOD FOR MEASURING ISOTOPE RELATIONSHIPS IN GAS SAMPLES

Info

Publication number
DE69711178D1
DE69711178D1 DE69711178T DE69711178T DE69711178D1 DE 69711178 D1 DE69711178 D1 DE 69711178D1 DE 69711178 T DE69711178 T DE 69711178T DE 69711178 T DE69711178 T DE 69711178T DE 69711178 D1 DE69711178 D1 DE 69711178D1
Authority
DE
Germany
Prior art keywords
relationships
gas samples
measuring isotope
measurements
ndir device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69711178T
Other languages
German (de)
Inventor
J Eckstrom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SRI International Inc
Original Assignee
SRI International Inc
Stanford Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SRI International Inc, Stanford Research Institute filed Critical SRI International Inc
Application granted granted Critical
Publication of DE69711178D1 publication Critical patent/DE69711178D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath

Abstract

An apparatus for measuring isotopic ratios provides four separate optical paths for separate measurement of each of two isotopes relative to a reference signal, using spectrally resolved infrared radiation. The design permits the measurements to be made accurately without significant time lags between measurements, and without interchanging of cells or filters.
DE69711178T 1996-06-11 1997-06-10 NDIR DEVICE AND METHOD FOR MEASURING ISOTOPE RELATIONSHIPS IN GAS SAMPLES Expired - Lifetime DE69711178D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/661,482 US5747809A (en) 1996-06-11 1996-06-11 NDIR apparatus and method for measuring isotopic ratios in gaseous samples
PCT/US1997/009751 WO1997047957A1 (en) 1996-06-11 1997-06-10 Ndir apparatus and method for measuring isotopic ratios in gaseous samples

Publications (1)

Publication Number Publication Date
DE69711178D1 true DE69711178D1 (en) 2002-04-25

Family

ID=24653790

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69711178T Expired - Lifetime DE69711178D1 (en) 1996-06-11 1997-06-10 NDIR DEVICE AND METHOD FOR MEASURING ISOTOPE RELATIONSHIPS IN GAS SAMPLES

Country Status (7)

Country Link
US (1) US5747809A (en)
EP (1) EP0904529B1 (en)
JP (1) JP2000512757A (en)
AT (1) ATE214802T1 (en)
CA (1) CA2256729A1 (en)
DE (1) DE69711178D1 (en)
WO (1) WO1997047957A1 (en)

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US7004909B1 (en) * 2001-03-19 2006-02-28 Pranalytica, Inc. Diagnostic method for high sensitivity detection of component concentrations in human gas emissions
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US6888127B2 (en) * 2002-02-26 2005-05-03 Halliburton Energy Services, Inc. Method and apparatus for performing rapid isotopic analysis via laser spectroscopy
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US7427760B2 (en) * 2006-11-30 2008-09-23 The Science And Technology Facilities Council Infrared spectrometer
EP2185914B1 (en) * 2007-09-05 2019-10-09 GE Analytical Instruments, Inc. Carbon measurement in aqueous samples using oxidation at elevated temperatures and pressures
FR2941530B1 (en) * 2009-01-28 2011-03-18 S Seres Environnement Sa PORTABLE ETHYLOMETER APPARATUS
JP5587344B2 (en) * 2009-02-02 2014-09-10 プラネタリー・エミッションズ・マネージメント System for monitoring greenhouse gas flux
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US8148691B1 (en) * 2009-08-21 2012-04-03 Jacob Y Wong Calibration methodology for NDIR dew point sensors
DE102009058394B3 (en) 2009-12-15 2011-02-10 Siemens Aktiengesellschaft Method for measuring the concentration of at least one gas component in a sample gas
DE102010054940B4 (en) 2009-12-18 2018-11-29 Abb Ag Method and device for advanced respiratory gas diagnosis by means of isotope-specific NDIR gas analysis
US8953165B2 (en) * 2010-10-21 2015-02-10 Spectrasensors, Inc. Validation and correction of spectrometer performance using a validation cell
EP2525210B1 (en) * 2011-05-16 2014-06-04 Sick Ag Device and method for determining a concentration of a measurement component in a gas
JP5900248B2 (en) * 2012-08-29 2016-04-06 東亜ディーケーケー株式会社 Spectrophotometer
US9995623B2 (en) * 2013-03-14 2018-06-12 Integrated Plasmonics Corporation Ambient light assisted spectroscopy
US10018555B2 (en) * 2014-03-12 2018-07-10 Shenzhen China Star Optoelectronics Technology Co., Ltd. Device and method for measuring concentration of etchant
US20150301019A1 (en) * 2014-04-16 2015-10-22 James R. Smith Hand Held Breath Analyzer
RU2577275C1 (en) * 2014-12-11 2016-03-10 ОАО "Национальный центр лазерных систем и комплексов "Астрофизика" Isotopical selection process
DE102015000626A1 (en) * 2015-01-22 2016-07-28 Kibion Gmbh Method for the detection of Helicobacter pylori
EP3104163B1 (en) * 2015-06-12 2017-12-20 Siemens Aktiengesellschaft Process gas analyser and method for analysing a process gas
JP6596961B2 (en) * 2015-06-19 2019-10-30 Ｔｄｋ株式会社 Concentration sensor
CN104964944B (en) * 2015-06-23 2017-10-31 广州华友明康光电科技有限公司 A kind of two-way infrared spectrum analysis system and its detection method
GB201618182D0 (en) * 2016-10-27 2016-12-14 Science And Tech Facilities Council The Infra red spectrometer
US10330592B2 (en) 2017-07-21 2019-06-25 Serguei Koulikov Laser absorption spectroscopy isotopic gas analyzer
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CN112858217B (en) * 2021-03-12 2022-07-15 中国科学技术大学 Device and spectrum appearance of dual wavelength method ration detection carbon 14 isotope
LT7040B (en) * 2022-05-13 2023-12-27 Valstybinis mokslinių tyrimų institutas Fizinių ir technologijos mokslų centras Optical CO2 concentration meter based on gas absorption

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Also Published As

Publication number Publication date
US5747809A (en) 1998-05-05
WO1997047957A1 (en) 1997-12-18
CA2256729A1 (en) 1997-12-18
JP2000512757A (en) 2000-09-26
EP0904529B1 (en) 2002-03-20
ATE214802T1 (en) 2002-04-15
EP0904529A1 (en) 1999-03-31

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